True TDD-2-HC User manual

underbar refrigeration
TRUE MANUFACTURING CO., INC.
2001 East Terra Lane • O’Fallon, Missouri 63366-4434
(636)-240-2400 • FAX [phone] • INT'L FAX [phone] • (800)-325-6152
Parts Department (800)-424-TRUE • Parts Department FAX# [phone]
Web: www.truemfg.com
TRUE
manufacturing co., inc.INSTALLATION MANUAL
INSTALLATION MANUAL
underbar refrigeration
TBB-3G-S
TBB-2
TD-50-18-S
TDD-4
TDB-24-48-1-G-1
CONGRATULATIONS!
You have just purchased the finest commercial refrigerator
available. You can expect many years of trouble-free operation.
TABLE OF CONTENTS
SAFETY INFORMATION
Safety Precautions 1
Proper Disposal, Connecting Electricity, & Adapter Plugs 2
INSTALLATION
Ownership, Uncrating, & How to Connect to Electricity 3
Wire Gauge Chart 4
Locating and Leveling 4
Sealing Cabinet to the Floor 5
SETUP
Standard Accessories 6
Direct Draw Draft Arm Installation 8
Cabinet Adjustment 11
OPERATION
Startup 13
Mechanical Temperature Controls Sequence of Operation 14
Electronic Temperature Controls Sequence of Operation 18
Sollatek Electronic Temperature Control 20
Storage & Handling 21
MAINTENANCE, CARE, CLEANING
Cleaning Condenser Coil 22
Important Warranty Information 22
Stainless Steel Equipment Care and Cleaning 23
General Maintenance 24
WARRANTY
Warranty 28

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Loss or spoilage of products in your refrigerator/
freezer is not covered by warranty. In addition to
following recommended installation procedures
you must run the refrigerator/freezer 24 hours
prior to usage.
NOTICE TO CUSTOMER
WARNING: Use this appliance for its intended purpose as described in this Owner Manual.
How to Maintain Your True Refrigerator to Receive the Most Efficient and Successful Operation.
You have selected one of the finest commercial refrigeration units made. It is manufactured under strict quality controls with only the best
quality materials available.Your TRUE cooler when properly maintained will give you many years of trouble-free service.
TO LOCATE REFRIGERANT TYPE, SEE SERIAL LABEL INSIDE CABINET. This cabinet may contain fluorinated greenhouse
gas covered by the Kyoto Protocol (please refer to cabinet’s inner label for type and volume, GWP of 134a= 1,300. R404a= 3,800).
FOR HYDROCARBON REFRIGERATION ONLY (R-290) SEE BELOW:
• DANGER - Risk of fire or explosion. Flammable refrigerant used. Do not use mechanical devices to defrost refrigerator. Do not
puncture refrigerant tubing.
• DANGER - Risk of fire or explosion. Flammable refrigerant used. To be repaired only by trained service personnel. Do not puncture
refrigerant tubing.
• CAUTION - Risk of fire or explosion. Flammable refrigerant used. Consult repair manual/owner’s guide before attempting to service
this product. All safety precautions must be followed.
• CAUTION - Risk of fire or explosion. Dispose of properly in accordance with federal or local regulations. Flammable refrigerant used.
• CAUTION - Risk of fire or explosion due to puncture of refrigerant tubing; follow handling instructions carefully. Flammable refrigerant
used.
• CAUTION - Keep clear of obstruction all ventilation openings in the appliance enclosure or in the structure for building-in.
SAFETY INFORMATION
SAFETY PRECAUTIONS
When using electrical appliances, basic safety precautions should be
followed, including the following:
• This refrigerator must be properly installed and located in
accordance with the Installation Instructions before it is used.
• Do not allow children to climb, stand or hang on the shelves
in the refrigerator. They could damage the refrigerator and
seriously injure themselves.
• Do not touch the cold surfaces in the freezer compartment
when hands are damp or wet. Skin may stick to these
extremely cold surfaces.
• Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance. Do not store
explosive substances such as aerosol cans with a flammable
propellant in this appliance.
• Keep fingers out of the “pinch point” areas; clearances between
the doors and between the doors and cabinet are necessarily
small; be careful closing doors when children are in the area.
• Unplug the refrigerator before cleaning and making repairs.
• Setting temperature controls to the 0 position does not
remove power to the light circuit, perimeter heaters, or
evaporator fans.
NOTE: We strongly recommend that any servicing be preformed
by a qualified technician.

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RISK OF CHILD
ENTRAPMENT
PROPER DISPOSAL OF THE REFRIGERATOR
Child entrapment and suffocation are not problems of the past.
Junked or abandoned refrigerators are still dangerous… even if they
will sit for “just a few days.” If you are getting rid of your old refrigera-
tor, please follow the instructions below to help prevent accidents.
BEFORE YOU THROW AWAY YOUR OLD
REFRIGERATOR OR FREEZER:
• Take off the doors.
• Leave the shelves in place so that children may not easily climb
inside.
APPLIANCE DISPOSAL
When recycling appliance please make sure that the refrigerants are
handled according to local and national codes, requirements and
regulations.
REFRIGERANT DISPOSAL
Your old refrigerator may have a cooling system that uses “Ozone
Depleting” chemicals. If you are throwing away your old refrigerator,
make sure the refrigerant is removed for proper disposal by a quali-
fied service technician. If you intentionally release any refrigerants you
can be subject to fines and imprisonment under provisions of the
environmental regulations.
USE OF EXTENSION CORDS
NEVER USE AN EXTENSION CORD! TRUE will not war-
ranty any refrigerator that has been connected to an extension cord.
REPLACEMENT PARTS
• Component parts shall be replaced with like components.
• Servicing shall be done by authorized service personnel, to
minimize the risk of possible ignition due to incorrect parts or
improper service.
• Lamps must be replaced by identical lamps only.
• If the supply cord is damaged, it must be replaced by a special
cord or assembly available from the manufacturer or its service
agent.
HOW TO CONNECT ELECTRICITY
DO NOT, UNDER ANY CIRCUMSTANCES, CUT OR
REMOVE THE GROUND PRONG FROM THE POWER
CORD. FOR PERSONAL SAFETY, THIS APPLIANCE
MUST BE PROPERLY GROUNDED.
The power cord from this appliance is equipped with a grounding
plug which minimizes the possibility of electric shock hazard.
Have the wall outlet and circuit checked by a qualified electrician to
make sure the outlet is properly grounded.
If the outlet is a standard 2-prong outlet, it is your personal respon-
sibility and obligation to have it replaced with the properly grounded
wall outlet.
The refrigerator should always be plugged into it’s own individual
electrical circuit, which has a voltage rating that matches the rating
plate.
This provides the best performance and also prevents overloading
building wiring circuits which could cause a fire hazard from over-
heated wires.
Never unplug your refrigerator by pulling on the power cord. Always
grip plug firmly and pull straight out from the outlet.
Repair or replace immediately all power cords that have become
frayed or otherwise damaged. Do not use a cord that shows cracks
or abrasion damage along its length or at either end.
When removing the refrigerator away from the wall, be careful not
to roll over or damage the power cord.
If supply power cord is damaged it should be replaced with original
equipment manufacture parts. To avoid hazard this should be done
by a qualified service technician.
USE OF ADAPTER PLUGS
NEVER USE AN ADAPTER PLUG! Because of potential safety
hazards under certain conditions, we strongly recommend against the
use of an adapter plug.
The incoming power source to the cabinet including any adapters
used must have the adequate power available and must be properly
grounded. Only adapters listed with UL should be used.
NORTH AMERICA USE ONLY!
NEMA plugs
TRUE uses these types of plugs. If you do not have the right outlet
have a certified electrician install the correct power source.
NOTE: International plug configurations vary by voltage and country.
115/60/1
NEMA-5-15R
115/208-230/1
NEMA-14-20R
115/60/1
NEMA-5-20R
208-230/60/1
NEMA-6-15R
WARNING!DANGER!

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OWNERSHIP
To ensure that your unit works properly from the first day, it must
be installed properly. We highly recommend a trained refrigeration
mechanic and electrician install your TRUE equipment.The cost of a
professional installation is money well spent.
Before you start to install your TRUE unit, carefully inspect it for
freight damage. If damage is discovered, immediately file a claim with
the delivery freight carrier.
TRUE is not responsible for damage incurred during shipment.
UNCRATING
TOOLS REQUIRED
• Adjustable Wrench
• Phillips Screwdriver
• Level
The following procedure is recommended for uncrating the unit:
A. Remove the outer packaging, (cardboard and bubbles or
Styrofoam corners and clear plastic). Inspect for concealed
damage. Again, immediately file a claim with the freight carrier
if there is damage.
B. Move your unit as close to the final location as possible before
removing the wooden skid.
C. Remove door bracket on swinging glass door models (see
image 1-2). Do not throw the bracket or blocks away. For
future cabinet movement the bracket and blocks will need to
be installed so the glass door does not receive any damage.
(See image for bracket and shipping block removal)
NOTE: KEYS FOR COOLERS WITH DOOR LOCKS
ARE LOCATED IN WARRANTY PACKETS.
ELECTRIC INSTALLATION & SAFETY
INFORMATION
• If the supply cord is damaged, it must be replaced by a special
cord or assembly available from the manufacturer or its service
agent.
• Lamps must be replaced by identical lamps only.
• Appliance tested according to the climate classes 5 and 7
temperature and relative humidity.
ELECTRICAL INSTRUCTIONS
A. Before your new unit is connected to a power supply, check the
incoming voltage with a voltmeter. If anything less than 100% of
the rated voltage for operation is noted, correct immediately.
B. All units are equipped with a service cord, and must be
powered at proper operating voltage at all times. Refer to
cabinet data plate for this voltage.
TRUE RECOMMENDS THAT A SOLE USE CIRCUIT BE
DEDICATED FOR THE UNIT.
WARNING: Compressor warranties are void if compressor burns
out due to low voltage.
WARNING: Power supply cord ground should not be removed!
WARNING: Do not use electrical appliances inside the food stor-
age compartments of the appliances unless they are of the type
recommended by the manufacturer.
NOTE: To reference wiring diagram, remove front louvered grill,
wiring diagram is positioned on the inside cabinet wall.
INSTALLATION
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230 Volts Distance In Feet To Center of Load
Amps 20 30 40 50 60 70 80 90 100 120 140 160
5 14 14 14 14 14 14 14 14 14 14 14 14
6 14 14 14 14 14 14 14 14 14 14 14 12
7 14 14 14 14 14 14 14 14 14 14 12 12
8 14 14 14 14 14 14 14 14 14 12 12 12
9 14 14 14 14 14 14 14 14 12 12 12 10
10 14 14 14 14 14 14 14 12 12 12 10 10
12 14 14 14 14 14 14 12 12 12 10 10 10
14 14 14 14 14 14 12 12 12 10 10 10 8
16 14 14 14 14 12 12 12 10 10 10 8 8
18 14 14 14 12 12 12 10 10 10 8 8 8
20 14 14 14 12 10 10 10 10 10 8 8 8
25 14 14 12 12 10 10 10 10 8 8 6 6
30 14 12 12 10 10 10 8 8 8 6 6 6
35 14 12 10 10 10 8 8 8 8 6 6 5
40 14 12 10 10 8 8 8 6 6 6 5 5
50 12 10 10 8 6 6 6 6 6 5 4 4
60 12 10 8 6 6 6 6 6 5 4 4 3
70 10 10 8 6 6 6 5 5 4 4 2 2
80 10 8 8 6 6 5 5 4 4 3 2 2
90 10 8 6 6 5 5 4 4 3 3 1 1
100 10 8 6 6 5 4 4 3 3 2 1 1
115 Volts Distance In Feet To Center of Load
Amps 20 30 40 50 60 70 80 90 100 120 140 160
2 14 14 14 14 14 14 14 14 14 14 14 14
3 14 14 14 14 14 14 14 14 14 14 14 12
4 14 14 14 14 14 14 14 14 14 12 12 12
5 14 14 14 14 14 14 14 12 12 12 10 10
6 14 14 14 14 14 14 12 12 12 10 10 10
7 14 14 14 14 14 12 12 12 10 10 10 8
8 14 14 14 14 12 12 12 10 10 10 8 8
9 14 14 14 12 12 12 10 10 10 8 8 8
10 14 14 14 12 12 10 10 10 10 8 8 8
12 14 14 12 12 10 10 10 8 8 8 8 6
14 14 14 12 10 10 10 8 8 8 6 6 6
16 14 12 12 10 10 8 8 8 8 6 6 6
18 14 12 10 10 8 8 8 8 8 8 8 5
20 14 12 10 10 8 8 8 6 6 6 5 5
25 12 10 10 8 8 6 6 6 6 5 4 4
30 12 10 8 8 6 6 6 6 5 4 4 3
35 10 10 8 6 6 6 5 5 4 4 3 2
40 10 8 8 6 6 5 5 4 4 3 2 2
45 10 8 6 6 6 5 4 4 3 3 2 1
50 10 8 6 6 5 4 4 3 3 2 1 1
WIRE GAUGE CHART

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SEALING CABINET TO FLOOR
STEP 1 - Position Cabinet - Allow one inch between the wall and
rear of the refrigerated Bar Equipment to assure proper ventilation.
For Glass & Plate Chillers/Frosters 3 inches between the wall and
rear of the cabinet will assure proper ventilation.
STEP 2 - Level Cabinet - Cabinet should be level, side to side and
front to back. Place a carpenter’s level in the interior floor in four
places:
A. Position level in the inside floor of the unit near the doors.
(Level should be parallel to cabinet front). Level cabinet.
B. Position level at the inside rear of cabinet. (Again level should
be placed parallel to cabinet back).
C. Perform similar procedures to steps A & B by placing the level
on inside floor (left and right sides - parallel to the depth of the
cooler). Level cabinet.
STEP 3 - Draw an outline on the base on the floor.
STEP 4 - Raise and block the front side of the cabinet.
STEP 5 - Apply a bead of “NSF Approved Sealant”, (see list below),
to floor on half inch inside the outline drawn.The bead must be heavy
enough to seal the entire cabinet surface when it is down on the
sealant.
STEP 6 - Raise and block the rear of the cabinet
STEP 7 - Apply sealant on floor as outlined in Step 5 on other
three sides.
STEP 8 - Examine to see that cabinet is sealed to floor around
entire perimeter.
NOTE: Asphalt floors are very susceptible to chemical attack. A
layer of tape on the floor prior to applying the sealant will protect
the floor.
NSF APPROVED SEALANTS:
1. Minnesota Mining #ECU800 Caulk
2. Minnesota Mining #ECU2185 Caulk
3. Minnesota Mining #ECU1055 Bead
4. Minnesota Mining #ECU1202 Bead
5. Armstrong Cork - Rubber Caulk
6. Products Research Co. #5000 Rubber Caulk
7. G.E. Silicone Sealer
8. Dow Corning Silicone Sealer
LOCATING
A. Use a Phillips screw diver and remove four screws from the
L-bracket connected the unit to the wood skid (see image 1).
Then use a 3/8” socket or wrench and remove the L-bracket
from the unit (see image 2).
B. Remove skid by unscrewing all base rail anchor brackets. Place
skid to the side.
C. Carefully upright cabinet.
D. Appliance tested according to the climate classes 5 and 7 for
temperature and relative humidity.
When lifting unit do not use the countertop as a lifting point. Also
remember to leave cabinet upright for 24 hours before plugging into
power source.
LEVELING
A. Set unit in its final location. Be sure there is adequate ventilation
in your room. Under extreme heat conditions, (100°F+,
38°C+), you may want to install an exhaust fan.
WARNING: WARRANTY IS VOID IF VENTILATION IS
INSUFFICIENT.
B. Proper leveling of your TRUE cooler is critical to operating
success (for non-mobile models). Effective condensate removal
and door operation will be effected by leveling.
C. The cooler should be leveled front to back and side to side with
a level.
D. Ensure that the drain hose or hoses are positioned in the pan.
E. Free plug and cord from inside the lower rear of the cooler (do
not plug in).
F. The unit should be placed close enough to the electrical supply
so that extension cords are never used.
NOTE: If the cabinet has a center leveling screw, castor, or leg,
make sure it is adjusted properly so it makes full contact with the
floor after the cabinet has been leveled.
WARNING: CABINET WARRANTIES ARE VOID IF
OEM POWER CORD IS TAMPERED WITH.TRUE
WILL NOT WARRANTY ANY UNITS THAT ARE
CONNECTED TO AN EXTENSION CORD.
Removing bracket from skid. Removing bracket from cabinet.
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SHELVING AND BIN DIVIDER INSTALLATION /
OPERATION
SHELF INSTALLATION:
A. Hook shelf clips onto shelf standards.
B. Position all four shelf clips equal in distance from the floor for
flat shelves.
C. Shelves are oriented so that cross support bars are facing
down.
D. Place shelves on shelf clips making sure all corners are seated
properly.
Shelf
Clip
Shelf
Shelf
Pillaster
(I-beam)
Shelf
Standards
STANDARD ACCESSORIES SHELF INSTALLATION:
For Proper Shelf Clip Installation Please Read The Following
Instructions.
STEP 1
Install the top tab of the shelf clip into the proper hole. Push up on
the bottom of the clip. (See image 1).
STEP 2
Bottom tab of the shelf clip will fit tightly. You may need to squeeze
or twist the bottom of the shelf clip to install. (See images 2 & 3).
STEP 3
After installation, the shelf clip will fit snug into the shelf standard.
The shelf clip should not be loose or able to wiggle out of the shelf
standard.
SHELF INSTALLATION TIPS
1. Install all the shelf clips before installing the shelves.
2. Start at the bottom in terms of shelf installation and work your
way up.
3. Always lay the back of each shelf down on the rear clips before
the front.
WARNING!
Do not use pliers or any crimp-
ing tools when installing shelf clips.
Altering shelf clips in any way can lead
to shelving instability.
SETUP
Installing top tab of shelf clip
1
You may need to squeeze or twist
the bottom of the shelf clip to
install
3
Installing bottom of the shelf
clip
2
Shelf clip installation complete
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HORIZONTAL BOTTLE COOLER BIN DIVIDER
INSTALLATION:
Horizontal bottle coolers are shipped with bin dividers in place. If it is
necessary to adjust spacing the following procedure is recommended.
A. Dividers are spring loaded - push divider towards rear of the
cooler to release from front grommeted holes.
B. Lineup divider front pegs with desired holes and punch through
interior tape lining of both top and bottom holes - bottom peg
first (front holes are taped over to improve insulation values).
C. Remove divider from the front holes and line up regular and
spring loaded rear pegs with holes in line with those desired in
front. Insert as far as possible and maneuver front pegs in place.
BIN DIVIDER INSTALLATION
NOTE: Divider positioned in front of mechanical box requires
specific notch cut out.
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6
5
4
3
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DIRECT DRAW DRAFT ARM INSTALLATION
On direct draws, the drain is located at the front of the cabinet. To
plumb in the drain, connect 3⁄4" (2cm) P.V.C. pipe to the 3⁄4" (2cm)
barbed fitting supplies with the unit.
CO2 PRESSURE
Mobile tapsters, to retain complete mobility, the CO2 tank (up to
five pounds in size) can be placed inside the cooler (strap holders
furnished).
CAUTION
Filled CO2 tanks are potentially dangerous because of the pressure
they contain. If you are unfamiliar with their use or the use of the
CO2 regulator, seek information from your local distributor, or your
local beverage man before proceeding.
INSTALL DRAFT ARM
Place rubber washer over draft arm mounting holes in cabinet, put
beer line connector down through hole. Next, secure draft arm with
four screws. (See images 1-6)
Insert air hose (one inch plastic tube) in draft arm, being careful not
to disturb insulation. Remove top cover of draft arm and attach air
hose clip to the insulating sleeve at the top of the draft arm. Replace
top cover.The air hose clip will assure that the hose remains in proper
place at all times, keeping the beer faucet cold. (See image 7-9)
Thread beer line connector to draft arm and secure draft arm to cabinet
with rubber gasket under the draft arm.
Draft arm install contents.
Draft arm not shown.
Beer line connector.
1 2 3 4 5
Thread beer draft arm
handle onto the draft arm.
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TDD-1 CO2 KNOCK-OUT
This instruction is TRUE’s recommended procedure for installing a
remote CO2 container.
REQUIRED TOOLS
• Pliers
• Power Drill
• Silicone Sealer
• Drill bit, 1/2"
STEP 1 - Remove black knockout plug with a pair of pliers.
NOTE: Knockout plug for CO2 line can be locate in two different
areas.View diagram to locate these two areas.
STEP 2 - Use drill and bit to bore hole straight back through wall
into compressor compartment.
STEP 3 - Snake CO2 line through hole down and around exiting
behind rear castor underneath rear grill.
STEP 4 - Seal hole around CO2 line with silicone sealer to
prevent cold air leakage.
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7
6
5
4
3
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Knockout Plug can
be located at either
location.

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TDD-2, -3 AND -4 (AND CLUB-TOP MODELS)
CO2 KNOCK-OUT
This instruction is TRUE’s recommended procedure for installing a
remote CO2 container.
REQUIRED TOOLS
• Pliers
• Power Drill
• Silicone Sealer
• Drill bit, 1/2"
STEP 1 - Remove black knockout plug with a pair of pliers.
STEP 2 - Use drill and bit to bore hole through insulation while
holding tool at a 30º angle.This should line up with a pre-punched
hole in the compressor compartment.
STEP 3 - Snake CO2 line through knockout hole and newly drilled
hole and route through rear grill louvers.
STEP 4 - Seal hole around CO2 line with silicone sealer to
prevent cold air leakage.

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STEP 1 - Before removing slide door do not use the side latch.
Tension on the door cord is needed to execute these operation
instructions. Doors can not be removed unless placed in specific loca-
tions stated in these instructions.
SLIDE DOOR OPERATION (CABINET ADJUSTMENT)
STEP 2
Two Door Units: Slide the front door so it is centered on the
cabinet. The door can not be removed unless it is centered. See
image 1 for door channel openings and image 2 for centering
door.
Three Door Units: Slide the middle door to the right so it is
centered with the left edge of the right door. See image 3.
STEP 3 - After centering the door lift it up and tilt top of door towards
the back of the unit so the rollers are out of the top channel. Swing
the bottom of the door out of the bottom channel.Then remove the
door and set it down. See image 4.
STEP 4 - Slide right door to the left so left edge lines up with the
left edge of TRUE Logo located above the door. See image 5. Then
lift door out of track same way as image 4.
TWO DOOR UNITS SKIP TO STEP 6
Two Door Units ONLY
1
Three Door Units ONLY
3
4
5
TRUE Logo
Two Door Units ONLY
CENTERED DOOR
2
Three Door Units ONLY

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STEP 7 - Let the door cord slowly retract back into the door side
channel.
STEP 8 - When reinstalling door, make sure door cord grommet
attaches to roller slot closest to pulley. See image 9.
STEP 5 - Slide left door to the right so right edge lines up with the
end of the TRUE Logo located at the top of the door frame. See
image 6.Then lift door out of track same way as image 4.
NOTE: Door cord will either be nylon cord or metal cable.
STEP 6 - Remove door cord from roller bracket. The black plastic
tab holding the door cord slides out the back. See images 7 & 8.
TO ADJUST SLIDE DOOR
STEP 1 - After cabinet is installed in a final location and correctly lev-
eled check for any openings when the slide doors are completely closed.
If there are any gaps/openings between the closed doors and cabinet,
the doors will need to be adjusted.
STEP 2 - Using a 7/16" wrench or adjustable wrench and 1/8" Allen
wrench loosen roller and move along slotted hole. After adjustment
has been made tighten the roller into place. See image 10.
10
7
Door roller bracket with metal cable.
8
Door roller bracket with nylon cord.
9
Door closing to the left
Three Door Units ONLY
TRUE Logo
6
SLIDE DOOR UNITS WITH HOLD OPEN FEATURE
These instructions explain how to keep door in open position.
A. Slide the door open.
B. Latch the door in the open position from the back side of door
(notch in track).
C. Door latch in image 1 is in the open position.
D. Door latch in image 2 is in the closed position.
Rear view of door & track
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STARTUP
A. The compressor is ready to operate. Plug in the cooler.
B. Temperature controls are factory-set to give refrigerators an
approximate temperature of 35°F and glass chiller frosters have
an approximate temperature of 0°F. Allow unit to function
several hours, completely cooling cabinet before changing the
control setting.
Temperature Control Location and Settings.
• Electronic temperature control is located on rear of unit or
behind access grill.
• LAE temperature control is located on the front of cabinet
countertop or in/behind louvered grill.
• Mechanical temperature control is located inside of unit.
See website for adjustments, sequence of operation, and more
information.
C. Excessive tampering with the control could lead to service
difficulties. Should it ever become necessary to replace
temperature control, be sure it is ordered from your TRUE
dealer or recommended service agent.
D. Good air flow in your TRUE unit is critical. Be careful to
load product so that it neither presses against the back wall,
nor comes within four inches of the evaporator housing.
Refrigerated air off the coil must circulate down the back wall.
NOTE: If the unit is disconnected or shut off, wait five minutes
before starting again.
RECOMMENDATION - Before loading product we recommend
you run your TRUE unit empty for two to three days.This allows you
to be sure electrical wiring and installation are correct and no ship-
ping damage has occurred. Remember, our factory warranty does not
cover product loss!
LIGHT SWITCH LOCATION:
The switch is located on the front of the evaporator housing toward
the front of the cabinet. Open the front doors and the switch will
be visible close to the ceiling the cabinet.
OPERATION

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MECHANICAL TEMPERATURE CONTROLS
COIL SENSING
An evaporator coil sensing temperature control ensures that the evaporator coil will remain clear
of frost and ice by not allowing the compressor to restart until the coil temperature is above the
freezing temperature. This is considered an off cycle defrost.
AIR SENSING
An air sensing temperature control used in a freezer application will require a defrost cycle with
heaters to ensure that the evaporator coil is kept clear of frost and ice.
MECHANICAL TEMPERATURE CONTROL GENERAL SEQUENCE OF OPERATION
MECHANICAL CONTROL REFRIGERATOR GENERAL SEQUENCE OF OPERATION
1. Cabinet is plugged in.
a. Interior lights will illuminate on Glass Door Models only. If lights do not come on verify the light switch is in the “ON”
position. Solid door cabinets may or may not have lights that may be controlled by the door switch.
2. The compressor and evaporator fans will start if the temperature control is calling for cooling. (If the compressor does not
start, verify that the temperature control is not in the “OFF” or “0” position.)
3. The temperature control may cycle the compressor and evaporator fan(s) on and off together.
a. The temperature control is sensing the evaporator coil temperature.
b. The temperature control should be set on the #4 or #5.
c. The warmest setting is #1, the coldest is #9, and #0 is the off position.
d. The thermometer is designed to read and display a cabinet temperature not a product temperature.
The thermometer may reflect the refrigeration cycle swings of up and down temperatures.
The most accurate temperature on a cabinet's operation is to verify the product temperature.
4. There is not a defrost timer as the temperature control will initiate the off-cycle defrost during each refrigeration cycle.
a. At this time, the compressor will and the evaporator fan(s) may turn off. Defrost heaters are not installed on refrigerators
and therefore will not be energized.
b. After the evaporator coil temperature has been reached, as determined by the temperature control, the compressor will
restart.
5. There may be a timer located on the condensing unit base. This timer is not used for a defrost event. The timer will change
the rotation of the reversing condenser fan motor.

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1
INSTALLATION INSTRUCTIONS
DANFOSS TEMPERATURE CONTROL ADJUSTMENT
FOR HIGH ALTITUDE APPLICATIONS:
REQUIRED TOOLS:
• Allen Wrench (5/64")
• Torx Screw (T-7)
TERMS:
Cut-out - Temperature sensed by the controller that shuts the
compressor off.
Cut-in - Temperature sensed by the controller that turns the
compressor on.
WHEN TO MAKE AN ADJUSTMENT TO A MECHANICAL TEMPERATURE CONTROL
OPERATION INSTRUCTIONS:
REQUIRED TOOLS:
• Jewelers Screw Driver (Small Screw Driver)
GE CONTROL INSTRUCTIONS:
The scale to the right may be used as a guide for measuring
degrees of rotation required for altitude correction. See Figure 1.
The arrows indicate direction of screw rotation. Turn calibration
screw clockwise to obtain warmer operating temperatures.
NOTE: Each 1/4 turn of the calibration screw is equal to
approximately 2 degrees F. Do not make more than 3/4 turn.
After making adjustment, measure temperature during three
cycles before adjusting again.
NOTE: Only adjust the screw
(small flathead) on the face of
the control (next to the cam).
See Figure 3.
Follow the Altitude Correction
Table to the right.
W
A
R
M
E
R
C
O
L
D
E
R
60
30
45
40
35
50
55
15
20
25
10
5
We advise to make a mechanical temperature control adjustment only for a high altitude location.
Compressor
Ter minals
Ground
Terminal
To adjust the temperature control
take the control knob off to view the
cut-in screw. (See Photo Above)
Front of Temperature Control
Calibration
Screw
1 2
3
Cut-out Adjustment
Screw Allen (5/64" or 2 mm.)
Cut-in Adjustment
Screw Torx (T-7)
Compressor
Connection
ALTITUDE CORRECTION TABLE:
CALIBRATION SCREW ADJUSTS
BOTH CUT-IN AND CUT-OUT
Altitude (Feet)
2000
3000
4000
5000
6000
7000
8000
9000
10,000
Clockwise Turns
7/60
11/60
15/60
19/60
23/60
27/60
30/60
34/60
37/60
Compressor Connection
(double terminal)
HOW TO ADJUST A MECHANICAL TEMPERATURE CONTROL
Altitude Correction
Scale Guide for Measuring Back of Temperature Control
Bottom of Temperature Control

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INSTALLATION INSTRUCTIONS
TEMPERATURE CONTROL ALTITUDE ADJUSTMENT:
REQUIRED TOOLS:
• Allen Wrench (5/64”)
• Torx Screw (T-7)
The scale to the right may be used as a guide for measuring degrees of rotation required for altitude
correction. The arrows indicate direction of screw rotation. See Figure 1.
IMPORTANT: Upright models ordered with “High Altitude” temperature controls are
pre-calibrated and do not require adjustment.
90
180
270
360
1
Scale Guide for Measuring
INSTRUCTIONS: DANFOSS TEMPERATURE CONTROL ADJUSTMENT FOR
HIGH ALTITUDE APPLICATIONS
STEP 1 - Unplug cooler.
STEP 2 - Remove the screws that secure the temperature control to the inset box.
STEP 3 - To make these adjustments it may be necessary to remove the temperature control from the housing.
NOTE: You may have to remove the wires attached to the control. Take note as to which wire is on which spade terminal.
STEP 4 - Pull out gently from cabinet.
NOTE: Mechanical temperature controllers are affected when functioning at high altitude.
The cut-in and cut-out temperatures will be colder than when the controller functions closer to sea level.
STEP 5 - For high elevation installations, it may be necessary to “warm-up” the set points. To make the adjustment, insert the
appropriate tool in each adjustment screw and turn 1/4 of a revolution clockwise (to the right). This procedure will adjust both
the cut-in and cut-out about 2˚F warmer.
STEP 6 - Make sure to reconnect the wires to the proper spade terminal when reinstalling.
INSTRUCTIONS: CUTLER HAMMER TEMPERATURE CONTROL ALTITUDE ADJUSTMENT
STEP 1 - Unplug cooler.
STEP 2 - Turn the temperature control to the “9” position.
STEP 3 - Remove the screws that secure the mounting plate to the evaporator top. See Figure 2.
STEP 4 - Pull control down gently from housing.
STEP 5 - Turn screws counterclockwise (CCW).
STEP 6 - Reassemble to cooler housing and return the temperature control to the “5” position.

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O
9
8
7
6
5
4
3
2
1
2
O
9
8
7
5
4
3
2
1
CUT
OUT
CUT
IN
COLDER
BUL. NO.
CHART
CCW Adjustment
(based on 360°/
complete turn)Height
2000' 42°
3000' 78°
4000' 114°
5000' 150°
6000' 186°
7000' 222°
8000' 258°
9000' 294°
10,000' 330°

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ELECTRONIC TEMPERATURE CONTROLS
control probe = return air
defrost probe = coil
DANFOSS ELECTRONIC TEMPERATURE CONTROL GENERAL SEQUENCE OF OPERATION
DANFOSS ELECTRONIC CONTROL REFRIGERATOR WITHOUT DIGITAL DISPLAY
GENERAL SEQUENCE OF OPERATION
1. Cabinet is plugged in.
a. Interior lights will illuminate on glass door models only. If the lights do not come on verify the light switch is in the “ON”
position. Solid door cabinets may or may not have lights that may be controlled by the door switch.
b. Cabinet will start in a Defrost Cycle. The duration for defrost will be a minimum of 4 minutes and a maximum of
60 minutes.
2. The Danfoss control is preprogrammed to initiate defrost every 4 hours of compressor run time.
If deemed necessary by the Danfoss control additional defrost may occur at unspecified times.
a. At this time, the evaporator fans will continue to run but the compressor will turn off.
Some cabinets may also change the rotation of the reversing condenser fan motor.
b. Once a preprogrammed temperature of the evaporator coil is reached, the Defrost Cycle will terminate and the
2 minute delay will start.
c. After the 2 minute delay the compressor will restart.
3. The Danfoss control will cycle the compressor and the evaporator fan(s) on and off together.
a. The temperature control is sensing the discharge air temperature.
b. The temperature control should be set on the #4 or #5.
c. The warmest setting is #1, the coldest is #9, and #0 is the off position.
d. The thermometer is designed to read and display a cabinet temperature not a product temperature.
This cabinet temperature may reflect the refrigeration cycle determined by the temperature control.
The most accurate temperature on a cabinets operation is to verify the product temperature.

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DANFOSS ELECTRONIC CONTROL FREEZER / GC WITHOUT DIGITAL DISPLAY
GENERAL SEQUENCE OF OPERATION
1. Cabinet is plugged in.
a. Interior lights will illuminate on glass door models only. If the lights do not come on verify the light switch is in the “ON”
position. Solid door cabinets may or may not have lights that may be controlled by the door switch.
b. Cabinet will start in a Defrost Cycle. The duration for defrost will be a minimum of 4 minutes and a maximum of 30 minutes.
2. The Danfoss control is preprogrammed to initiate defrost every 4 hours of compressor run time.
If deemed necessary by the Danfoss control additional defrost may occur at unspecified times.
a. At this time, the compressor and evaporator fan(s) will turn off and the evaporator coil heater and drain tube heater will
be energized. Some cabinets may also change the rotation of the reversing condenser fan motor.
b. Once a preprogrammed temperature of the evaporator coil is reached, or 30 minutes,the Defrost Cycle will terminate
and the 2 minute delay will occur.
c. After the 2 minute delay the compressor will restart.
d. The evaporator fans will remain off for an additional 3 minutes.
3. The Danfoss control will cycle the compressor and the evaporator fan(s) on and off together.
a. The temperature control is sensing the discharge air temperature.
b. The temperature control should be set on the #4 or #5.
c. The warmest setting is #1, the coldest is #9, and #0 is the off position.
d. The thermometer is designed to read and display a cabinet temperature not a product temperature.
This cabinet temperature may reflect the refrigeration cycle determined by the temperature control.
The most accurate temperature on a cabinets operation is to verify the product temperature.